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D. Peng; Y. Zhang; C. -L. Yin; J. -W. Zhang. (2008). Combined control of a regenerative braking and antilock braking system for hybrid electric vehicles. , 9(6), 749–757. doi:10.1007/s12239-008-0089-3 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research